Dr. Mark Clayton, MD
- Industry payments
- $171
- Medical groups
- 2
- State licenses
- 2
- Year NPI issued
- 2006
- Practice address
- 100 E Lancaster Ave, Wayne, PA 19087
- Practice phone
- Call (610) 645-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lankenau Medical Center
Wayne, Pennsylvania
Find Dr. Clayton's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark Clayton is a developmental - behavioral pediatrics physician in Wayne, Pennsylvania
Dr. Clayton practices at Lankenau Medical Center in Wayne, Pennsylvania.
Dr. Clayton's NPI, 1528011582, was assigned on May 18, 2006. Dr. Clayton holds Pennsylvania license MD058800L.
- NPI
- 1528011582NPI Registry (opens in a new tab)
- NPI enumeration date
- May 18, 2006
- NPI status
- Active
- Practice phone
- (610) 645-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark Clayton practices at Lankenau Medical Center in Wayne, Pennsylvania
Dr. Clayton's primary practice is Lankenau Medical Center, at 100 E Lancaster Ave, Wayne, PA 19087 in Delaware County. The practice phone is (610) 645-2000.
- Lankenau Medical Center100 E Lancaster Ave, Wayne, PA 19087 · Delaware CountyPhone(610) 645-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Clayton is affiliated with 1 site of care and 2 medical groups
Dr. Clayton's primary practice is Lankenau Medical Center in Wayne, Pennsylvania. The medical group on file is St. Luke's South Mountain Family Practice. Dmand AI also links Dr. Clayton to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark Clayton's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Clayton practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lankenau Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Clayton is one of 28 developmental - behavioral pediatrics physicians in Pennsylvania
Developmental - behavioral pediatrics is Dr. Clayton's primary specialty in the NPI Registry, under taxonomy code 2080P0006X. Dmand AI has Dr. Clayton's licenses on file in 2 states: Pennsylvania and North Carolina.
Specialties and state licenses
- Developmental - behavioral pediatrics, PennsylvaniaPrimary
- Pediatrics, North Carolina
Developmental - behavioral pediatrics physicians near Dr. Clayton
Counts of developmental - behavioral pediatrics physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark Clayton's patients have a median age of 6
Across all payers, Dmand AI patient panel data puts Dr. Clayton's median patient age at 6, with 29% women.
Dr. Clayton's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 6
Patient panel by sex, all payers
- Women29%
- Men71%
Source: Dmand AI Patient Panel Data
Dr. Mark Clayton received $171 in industry payments from 2021 to 2023
CMS Open Payments shows 3 general payments to Dr. Clayton from 3 drug and device companies from 2021 to 2023. Food and beverage make up the largest share, 100% of the total. Ironshore Pharmaceuticals Inc. paid the most, $108.
General payments to Dr. Clayton by program year, 2021 to 2023
Companies that paid Dr. Clayton the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark Clayton's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark Clayton
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark Clayton's NPI number?
Dr. Mark Clayton's NPI number is 1528011582. It was assigned on May 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Clayton?
Dr. Mark Clayton is a developmental - behavioral pediatrics physician in Wayne, Pennsylvania. The primary specialty in the NPI Registry is Developmental - Behavioral Pediatrics Physician (taxonomy code 2080P0006X).
Where does Dr. Mark Clayton practice?
Dr. Clayton practices at 100 E Lancaster Ave, Wayne, PA 19087. Dr. Clayton's primary practice is Lankenau Medical Center in Wayne, Pennsylvania. Dmand AI also links Dr. Clayton to 1 medical group.
What is Dr. Mark Clayton's office phone number?
The practice phone on file for Dr. Clayton is (610) 645-2000.
What is Dr. Mark Clayton's medical license number?
Dr. Clayton holds Pennsylvania license MD058800L, one of the licenses on file in 2 states.
Which states has Dr. Mark Clayton been licensed in?
Dmand AI has state licenses on file for Dr. Clayton in Pennsylvania and North Carolina.
What medical group is Dr. Mark Clayton part of?
Dr. Clayton is linked to St. Luke's South Mountain Family Practice. Dmand AI links Dr. Clayton to 1 more medical group.
Has Dr. Mark Clayton received payments from drug or device companies?
CMS Open Payments shows $171 in general payments to Dr. Clayton from 3 companies from 2021 to 2023. The largest total came from Ironshore Pharmaceuticals Inc.
How long has Dr. Mark Clayton been practicing?
Dr. Clayton's NPI was assigned in 2006.
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